CSS Essentials

 •            Well constructing a new transmission system is always a difficult task . For constructing or or extension of new transmission system we need to the factors and issues that would riase in the installation and after it as well. We need to consider two factors before installation technical and economical . • The technical include the power to be transmitted through the proposed line , length of the line. • Nature of transmission either it is single circuit or double circuit. • Voltage at which tower to be transmitted , nature of route from which the line will run . Choosing the conductor material we consider weather ,temperature ,area and other environmental aspects. The nature of conductor play an important role in establishing a transmission line. • The economic aspects include the loss per unit length , cost of auxilliaries .     Factors that are considered After Installation of Electrical power transmission system • Choice of s...

Vector Group of Transformers                     • A vector group is the International Electrotechnical Commission (IEC) method of categorizing the high voltage (HV) windings and low voltage (LV) winding configurations of three-phase transformers.                      • Vector group is a connection of primary winding , secondary winding and an electrical angle difference .                      • The vector group designation indicates the windings configurations and the difference in phase angle between them. The three phase transformer windings can be connected several ways. Based on the windings’ connection, the vector group of the transformer is determined. •              The transformer vector group is indicated on the Name Plate of transformer by the manufacturer. The vector group indicates ...

             Capacitor is a basic electrical component that stores charge.It is constructed of two parallel conductive plates separated by insulating material called dielectric.Connecting leads are attached to parallel plates.                Lets consider initially capacitor is in uncharged (Neutral) state.In neutral state both plates of a capacitor have an equal number of free electrons.Electrons are removed from plate A and equal number of electrons are deposited on plate B. Plate A becomes positive and Plate B becomes negative. During charging, no electrons flow through dielectric because its an insulator,The movement of electrons is ceased when voltage across the capacitor equals to source voltage.  Now if capacitor is disconnected from source, it retains charge and still it has voltage across its terminals.Charged capacitor acts as a temporary battery.            ...